勃起功能障礙，另又名為陽痿，是一種常見的男性私密疾病，這種疾病是無法勃起或者維持勃起狀況來滿足性活動。此外，勃起障礙已經被指出與缺血性心臟病為相同疾病的不同表現。勃起障礙病患而言，一般認為會受年齡所影響且好發在中老年的男性病患。因此，我們從全民健康保險研究資料庫取出40歲以上的新發勃起障礙病患，然後評估對於缺血性心臟病風險上的影響。之前大多數的研究都是在探討勃起障礙是否會引起缺血性心臟病的風險，本論文的研究提出考量雙向彼此間風險的影響。本論文研究結果顯示，勃起障礙的病患與非勃起障礙病患相比，勃起障礙病患有顯著增加缺血性心臟病風險 (HR =1.58, 95% CI=1.3-1.94)，缺血性心臟病的病患與非缺血性心臟病病患相比，缺血性心臟病病患有顯著增加勃起障礙風險(HR =1.72, 95% CI=1.43-2.06)。;Erectile dysfunction, as known as impotence, is a common male and private disorder disease, which is the inability to achieve or sustain an erection for satisfactory sexual activity. In addition, erectile dysfunction has been noted with ischemic heart disease as different manifestations of the same disease. Patients with erectile dysfunction, it is generally believed that male patients will be affected by the age and often occurs in elderly. Therefore, we crawl from the National Health Insurance Research Database 40 years of age patients with new onset of erectile dysfunction, and then the assessment of ischemic heart disease risks. Most previous studies explore whether erectile dysfunction can cause the risk of ischemic heart diseases. In this study, we present the impact of each other between two-way risks. Studies have shown that patients with erectile dysfunction compared to patients without erectile dysfunction, patients with erectile dysfunction have a significant increase in the risk of ischemic heart disease (HR = 1.58, 95% CI = 1.3-1.94), patients with ischemic heart disease compared to patients without ischemic heart disease, patients had a significant increase in the risk of erectile dysfunction (HR = 1.72, 95% CI = 1.43-2.06).